Pump

ABSTRACT

A multiple stage, axial flow, reversible pump for fluids and featured by a rotary barrel, driven externally and carrying multiple stage impeller vanes which rotate in relation to stator vanes fixed to an axial shaft which is itself fixed against rotation. The alternating rotating vanes and stator vanes are also alternately as well as removably secured to the barrel and shaft so that assembly and repair are facilitated.

United States Patent Pickens [4 July 18, 1972 PUMP 1 2,500,400 3/1950 Cogswell ..417/356 2 706 451 4/1955 Ortiz et al.... .....415/217 [72] Inventor: Paul D. Pickens, 5746 Dolphm Place, La

Jena Calm 3,433,163 3/1969 Sheets et a] ..417/356 [22] Filed: Dec. 14, 1970 Primary Examiner-Henry F. Raduazo 21 Appl. No.: 97,806

[56] References Cited UNITED STATES PATENTS 1,049,387 l/l913 Noll ..415/l99 Attorney-Knox & Knox [57] ABSTRACT A multiple stage, axial flow, reversible pump for fluids and featured by a rotary barrel, driven extemally and carrying multiple stage impeller vanes which rotate in relation to stator vanes fixed to an axial shaft which is itself fixed against rotation. The alternating rotating vanes and stator vanes are also alternately as well as removably secured to the barrel and shaft so that assembly and repair are facilitated.

2 Clalns, 4 Drawing figures Patented July 18, 1972 INVENTOR. PAUL D. PICKENS mime & 15am:

PUMP

BACKGROUND OF THE INVENTION sive to make and to service. There is, therefore, a need for such a pump in many fields including the art of watercraft propulsion and water conveyance.

SUMMARY OF THE INVENTION The present invention fills the above mentioned need since the necessary casing is reduced to a pair of identical end plates which function as inlet and outlet and a support for the pump, together with an exteriorly driven rotary barrel carrying impeller vanes acting against similar sized stator vanes interposed between the impeller vanes and supported on an axial shaft fixed to and between the end plates. The barrel and all the vanes are easily removed and the vanes are equipped with peripheral cylindrical sections and sleeves which function like thrust bearings in maintaining the vanes in proper relationship within the barrel.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevation view of the pump, partly sectioned along the axis;

FIG. 2 is a sectional view taken on line 22 of FIG. 1;

FIG. 3 is a sectional view taken on line 3-3 of FIG. 1; and

FIG. 4 is a sectional view taken on line 4-4 of FIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Some type of supporting frame structure will be required to give fixed mounting for the end plates 1212 which are interchangeable both physically and functionally as inlet or outlet structure. A mouth 14 for connection to a hose or the like may be formed in the same casting as the annulus 16 best shown in FIG. 2 and attaching lugs 18 are shown as representative of mounting means.

A cross bar 20 is noncircularly apertured as at 22 to receive the correspondingly shaped terminal 24 of an axial shaft 26, it being understood that this shaft extends the length of the pump and is similarly held in a cross arm in the other of said end plates 12.

Each end plate 12 also is fitted with a gland nut 28 with packing on a neck 30, and this neck is undercut as at 32 to receive the end of the barrel 34, which is thus mounted for rotation on and between the end plates 10.

The barrel 34 has rotary drive means such as the pulley 36 which may be secured directly thereon. Spaced apart thrust bearings 38 provide rotational support for the barrel, preferably at least upon both sides of the drive pulley 36. Internally of the barrel 34 a plurality of impeller vanes 40 are removably mounted as by cap screws 42 or the like, these screws being inserted through the barrel 34 into a peripheral cylindrical section 44 which may be formed integral with the vane 40. At the center, each impeller vane 40 has a sleeve section 46 which may be the full axial width of the vane and which rotates freely around the shaft 26.

Similarly, each stator vane 48 is secured to the shaft 26 by a sleeve section 50 and cap screws 52, and each stator vane has a peripheral cylindrical section 54 similar to the element 44 but freely turning within the barrel 34. The ends of the adjacent peripheral sections 44 and 54 and the adjacent sleeve sections 46 and 50 are in sliding contact so that these sections function like thrust bearings for the individual vanes to preserve the alternating impeller and stator vanes in proper relationship.

It IS understood that mmor variation from the form of the invention disclosed herein may be made without departure from, and drawings are to be considered as merely illustrative rather than limiting.

Iclajm:

1. In a pump:

an impeller comprising a cylindrical barrel open at both ends and having impeller bllades individually and removably attached therewithin and axially spaced therealong;

a stator comprising a shaft disposed on the axis of said barrel and having stator blades individually and removably attached to said shaft and interposed between said impeller blades and within said barrel;

means supporting said barrel for rotation about said axis comprising radial thrust bearings (38) and a pair of gland nut annular end plates (12) defining inlet and outlet structure and support means at said open ends non-rotatively supporting said stator shaft and having means facilitating dismantling of the pump for easy replacement of individual stator and impeller blades; and

external drive means to rotate said barrel.

2. A pump according to claim 1 wherein said impeller further comprises a peripheral cylindrical section on each of said impeller blades, said sections being removably secured to the internal surface of said barrel. 

1. In a pump: an impeller comprising a cylindrical barrel open at both ends and having impeller blades individually and removably attached therewithin and axially spaced therealong; a stator comprising a shaft disposed on the axis of said barrel and having stator blades individually and removably attached to said shaft and interposed between said impeller blades and within said barrel; means supporting said barrel for rotation about said axis comprising radial thrust bearings (38) and a pair of gland nut annular end plates (12) defining inlet and outlet structure and support means at said open ends non-rotatively supporting said stator shaft and having means facilitating dismantling of the pump for easy replacement of individual stator and impeller blades; and external drive means to rotate said barrel.
 2. A pump according to claim 1 wherein said impeller further comprises a peripheral cylindrical section on each of said impeller blades, said sections being removably secured to the internal surface of said barrel. 